Gong.



H. E. REEVE.

GONG. APPLiCATION FILED SEPT- 23, I915.

' Patented June 13,1916.

' z lzrg 5 Fave THE COLUMBIA PLANdURAPH 60., WASHINGTON, D. c.

HENRY .E. REEVE, OF BROOKLYN, NEW YORK.

GONG.

Specification of LettersjPatent. Patnted J ne 13 191 6 Application filed. September 23, 1915. Serial Iva 52,308.

To all whom it may concern:

Be it known that I, HENRY E. Rnnvn, a

' citizen of the United States of America, re-

siding. at 459 Carroll street, Brooklyn, New York, have invented new and useful Improvements in Gongs, of which the following is a specification.

This invention relates particularly to gon'gs of the single stroke type, thegeneral objects of the invention being to simplify and improve gongs of this character and to produce a gong which will possess the added advantages of being relatively inexpensive in construction and free of complicated parts. s

A special object is to protect the parts which might be injured by the'action of the elements and to' prevent access of dust, fumes and moisture to such parts.

A furtherobject is to secure a powerful actionof the hammer on the gong top or bell and to obtain this without unduev current consumption.

Other objects and features of'the'invention will appear as the'specification proceeds.

In the drawing accompanylng this specifi-o cation and wherein I have illustrated a practical and preferred embodiment of my down below the horizontal support and into] position above a laterallyextending armfon the hammer. This leaves the hammer free to swing into engagement with the. bell or gong top so that the action of thearmature is to throw the hammer forcibly into engage,

ment with the bell. A flexible diaphragm is preferably provided at the point Where the armaturearm projects down through the horizontal support and a close fitting cover is preferably applied to thehorizontal support, housing and protectingthe electromagnet and its armature.

A further feature 1s the provision of a roller at the point of engagement between the armature arm and the hammer arm.

This reduces friction and' prevents the accumulation of foreign matter which might interfere'with the stroke of the hammer.

' Another feature of the invention is a special form of buffer spring for the hammer consisting of a piece of spring metal screws, etc. may be produced punching action.

anchored atone end and bent upon itself to provide a spring arm disposed in the path of the hammer and supported at the point of the bend therein. a a A The accompanying drawing while illustrating a concrete and practical form ofthe invention is not intended to limitthe invention to this particular form, it being understood that various changes and 1 modifications maybe made without departing from the true spirit and scope of the invention.

Figure 1, 1s a side elevation with parts broken away and in section, of .a' single stroke gong constructedin accordance with and embodying the invention, the section being taken on a plane indicated by the line 11 in Fig. 2. Fig. 2, is a front view of the same, partly in section, the planeof the section being indicated by the line 22-in Fig. 1. Fig. 3 is a broken plan view of the'conduit connection appearing at the left in Flg, 2: V F1g. 4:, is a diagrammatic view illustrating the increasing leverage exerted by the armature on the hammer.

In the illustration 7 designates theframe or body of the gong, of substantially triangular formation and carrying at itsllower end a post 8 to which the bell or gong'top 9 is secured by a screw 10. This frame car rles at the top :a substantially horizontal supporting shelf 11, this supporting shelf being secured on top'of the upper ends of the side'arms of the triangular frame by screws 12. This shelf or base plate is prefe erably made ofsheet'metal so that the open ings necessary to be formed therein for bya simple Theelectromagnet 1 5 is carried by an'an gular bracket 16 suitably secured in posi-.

tiononlthe supporting shelf'as by means of l i the screws 17 This electromagnet is pref er'ably of double pole construction as indicated in Fig. 1;. Thearmatiire 18 ofthe 7 electromagnet A is pivotally supported ion spindles 19=having a bearing in the sides of the U-shaped bracket 20, Both the electro magnet and the armature are preferably magnetically separated from the support on which they are mounted, 'thisbeing accomplished in the present instance by the interposition of a layer of insulating material 21 between the magnet supporting bracket 16'and the base plate 11 and bythe use of non-magnetic bearing bushings 22 for the armature spindles 19. The stroke of the armember 27 secured to theunder side of the mature may be limited by providing it with a pin or lug 23 engaging in a limiting opening 24 formed in one of .the upstanding side arms of thearmature supporting bracket 20.

The hammer25of'the gong top is pivotally supported belowthe substantially horizontal supportingshelfon a pivot pin 26.

bAconvenient and very practical mounting for. the hammer is provided in the illustration by a substantially U-shaped channel supporting shelf by} screws .28, the depending as a cut side walls of this channel member servsupport for the pivot pin of the hammer. V i a r l "The operating connection-from the armature to thehammer' comprises a downward'ly projecting arm or lever carried by the armature and havinga one-way driving engagement with an, arm or lever 31 carried by the hammer. This one-way dr ving en- 1 gagementis preferablyrprovided by eXtendingthe hammer arm 31 laterally to one side of thegpivotal support 26 and by; extending the armature. arm 3O laterally into position above said hammer arm. This construction provides a; very, compactarrangement of parts, enabling the. placing of the hammer V directly beneath therelectromagnet instead of off "to one. side of the same.

Toreduce friction atthe pointof'engagement between i i the arms thereis preferably provided a fric- 7 tiOn reducing roller 32; this roller'in the illustration being carried by the laterally extending arm of the hammer. The engaging surface, of the armature arm is preferably inclined as indicated at 33. so as to'lie in a p'lanecoincident with the pivotal axis 19; ofthe armature, as indicated by the dot- 0 ted line 34 in Fig. 4. '7

I The electrical parts of the device are preferably protected against moisture, etc., by

. means of an airtight andliquid proof flex- .ible diaphragm closing the opening in the horizontal support through which the armature arm projects: This diaphragm is i indicated at 35 and the same consists of'a pair offlexible metallic disks connected together at their periphery, the upper one b'e-; I750 ing secured to the armature by means of a central bushingq36 and the lower disk' being armature toward the core heads of the magnet. In addition to' this spring effect, a sep- *arate spring 69 may be provided tending to force; the armature {toward the magnet and so. to partly f overcome the weight ofthe hammer.

The .strokeof the hammer is cushioned and the hammer is started on its return stroke by means of a buffer spring. This spring as indicated in Fig. 2 preferably is in the form of a strip of spring metal anchored at one end at 40 and bent around a stud or support 41 to provide the reversely directed spring arm 42 which is disposed in the path ofmovement of the hammer. The anchorage 40 for the buffer spring and the support 41 at the bent portion of the spring are'preferably in the form of pins as indicated in Fig. 2 engaged between the depend- @said channel member and closing in the space therebetween. I 1

In the normal condition of rest the hammer swings down by gravity until it rests against the stop 45 provided on the upper side of the post which supports the bell as 7 indicated in Fig. 2. hen the magnet is energized, the armature is forcibly drawn toward the-pole of the magnet and the armature arm swings downward, forcing the hammer; arm downward and throwing the hammer upward into engagement with the rim of the gong top; This sudden movement imparted to the armature swings the hammer with great force'into engagement with the gong top. The stroke of the armature is limited so that itcan carry the hammer only about to the position indicated at the left in Fig. 2 in dotted lines, the hammer after being carried to this point continuing its movement into engagement with the gong top by reason of its momentum. Thehammer is thus freed of the armature before the time of contact with the gong top and therefore strikes the gong top a quick, sharp blow, rebounding freely after its contact therewith. This freedom of movement insures a quick return of the hammer and prevents any interference between the gong top and hammer due to the vibration set up in these parts.

The blow of the hammer is furtheractuated by increasing the leverage exerted on the hammer. This effect is illustrated in Fig. 4 wherein the line 47 illustrates the effective leverage exerted by thearmature arm upon the hammer arm at the commencement of the stroke'and the line 48 indica-tes the effective leverage exerted at the end of the armature stroke. The hammer is thus given an accelerated movement resulting in a very forceful blow.

In the drawing I have illustrated a pre-' ferred method of connecting the gong in circuit, whichconsists in providing a terminalchamber at one side of the gong arranged to receive the sections of conduit. This terminal chamber is made up in the present instance of a U-shaped chamber member having top and bottom walls 50 and 51v connected by an upright back wall 52, said member connecting with flanges 53, 54 on the gong and having an open side closed by a removable cover 55. This cover at one end hooks into engagement with a stud 56 and is secured at its opposite end by a. screw 57. The sections of conduit 58 are engaged with the top and bottom50 and 51 on the chamber member and the service wires are connected with suitable terminals 59 and 60 carried by the gong within the chamber thus provided.

The magnet terminals 59 and 60 may conveniently be carried by the cover 65 which houses the electromagnet and its armature. This cover is secured in air-tight waterproof engagement with the substantially horizontal base plates 11 by means of screws 66, a gasket 67 being interposed at the joint between these parts. This gasket may be extended inward as indicated in Fig. 2 to provide the insulating layer 21 between the base plate and the magnet supporting bracket 16.

It will be noted that in the above de-' scribed construction and arrangement of parts, the pivotal axis of the hammer, the axis-of the armature and the axis of the roller are all substantially parallel to a plane indicated by the line 70 taken through the axes of the cores of theelectromagnet. This arrangement enables the application of the greatest power to the hammer and tion, which is weather-proof and which is quick and positive in its action.

What I claim is 1. In an electric gong, an electromagnet,

a hammer pivotally supported beneath said electromagnet and provided with a laterally extending arm, an armature for said electromagnet, an actuating arm connected with said armature extending laterally beneath the electromagnet and into position above the laterally extending arm of the hammer and a bell disposed in position to be engaged by said hammer.

2. An electric gong comprising a substan- Y tially horizontal shelf provided with an opening therethrough, an electromagnet wholly exposed.

mounted ontop of said shelf'and an armature for said electromagnet pivoted on said shelf, an arm connected withsaid armature projecting downwardly through the opening in the shelfand thence laterally beneath said shelf, a hammer pivotally supported below the shelf and provided with a laterally projecting arm disposed beneath the armature arnnabell disposed in position to be engaged by'said hammer and a cover housing the electromagnet and the armature and detachably secured to said shelf whereby upon removal of said cover the electromagnet and armature may be 3. In an electric gong, an electromagnet, a hammer pivotally supported beneath said electromagnetand provided with a laterally extending arm, an armature for said electromagnet, an actuating arm connected with said armature extending laterally beneath the electromagnetand into position above the laterally extending arm of thehammer, a friction reducing roller interposed between the armature arm and hammer arm, and a bell mounted in position to be engaged by the hammer.

4. In an electric gong, a horizontally dis posed electromagnet, an armature pivotally supported at the pole end of said electromagnet, a hammer pivotally supported below the electromagnet and having an actuating arm extending laterally into position beneath the electromagnet and an arm car ried by the armature extending laterally beneath the plane of the electromagnet into position above the hammer arm.

5. In an electric gong, a pivoted hammer,

a gong top to be engaged thereby, a buffer Y spring anchored at one end and having a reversely bent portion disposed in the path of movement of the hammer, a support engaging the buffer spring at the bend therein, an armature having a driving connection with the hammer and an electromagnet :tor actuating said armature.

6; An electric gong comprising a substantially horizontal support, an electromagnet mounted on said support, an armature for said electromagnet mounted on the'support,

spaced; supporting walls dependent from the horizontal support, an arm carried by the armature projecting down below the. horizontal support, a hammer pivotally supported between the dependent supporting walls provided with a laterally extending arm engaged by the armature arm and a bell engaged by said hammer.

7 In an electric gong, a substantially horizontal support, an electromagnet mounted on said support, an armature for the electromagnet mounted on the support,

a channel-member securedbeneath thehorizontal support, a dependent arm carried by the armature and projecting down below the horizontal "supportand into the chan. fnel-member, a hammer vpivoted in'the channel member and having'a laterally extendlng' arm lnclosed-in the channel member and engaged by ithe armature arm and a --bell adapted ,to be engaged by the hammer.

8." In air-electric gong, a substantially s pp t, (an eleetromagnet ture and projecting below the support, a

hammer pivoted in the channel member and '15 engaged by the armature arm to move said hammer towardzthe bell, a bell adapted to beengagedbyithe hammer and a bulfer spring for the hammer supported'by and inclos'ed Within the channel member. 9., In an electric gong, a substantially horizontal support'provided with an opening therethrough, an electromagnet mounted on said support, an armature for said electromagnet' mounted on the support, an

arm carried by the armature and projecting down through the opening in the horizontal support and thence laterally below said horizontal support, a flexible dusttight and liquid-proof diaphragm closing the opening in the horizontal support, a cover detachably secured to the horizontal support, and having a dust-tight and liquid-proof connection therewith, a'hammer pivoted below the horizontal support operatively engaged by the laterally extending portion of the armature arm and a bell adaptedto be engaged by said hammer.

, 10. In an electric gong, an electromagnet, a pivoted armature therefor, a'housing incasing the electromagnet, a hammer pivotally supported having an actuating arm Whose fulcrum is coincident Wltll that of the hammer, an arm carried by said armature projecting through a Wall of said housing and extending laterally beneath said Wall into engagement With said hammer arm.

" HENRYE. REEVE,

Copies -51 this patent may be'*obtained for five cents each, byaddressing the Commissioner of Patents,

I 1 1 Washington, D. 0. a i a 

